| Mission type | Navigation |
|---|---|
| Operator | ISRO |
| COSPAR ID | 2016-003A[1] |
| SATCATno. | 41241[2] |
| Website | http://www.isro.gov.in/Spacecraft/irnss-1e |
| Mission duration | 12 years |
| Spacecraft properties | |
| Spacecraft | IRNSS-1E |
| Spacecraft type | Satellite |
| Bus | I-1K |
| Manufacturer | ISRO Satellite Centre Space Applications Centre |
| Launch mass | 1,425 kilograms (3,142 lb) |
| Dry mass | 598 kilograms (1,318 lb) |
| Power | 1660 W |
| Start of mission | |
| Launch date | 09:31, 20 January 2016 (UTC) (2016-01-20T09:31:00Z) |
| Rocket | PSLV-C31 |
| Launch site | Satish DhawanSecond[3] |
| Contractor | ISRO |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geosynchronous |
| Longitude | 111.75°E[4] |
| Inclination | 28.09°[4] |
IRNSS-1E is the fifth out of seven in theIndian Regional Navigational Satellite System (IRNSS) series of satellites afterIRNSS-1A,IRNSS-1B,IRNSS-1C andIRNSS-1D. It is one among the seven of the IRNSS constellation of satellites launched to provide navigational services to the region. The satellite was placed ingeosynchronous orbit.[5] IRNSS-1E has been successfully launched into orbit on 20 January 2016[6][7] In 2025, IRNSS-1E was planned to be replaced at its orbital slot of 111.75ºE byNVS-02.[8] However, following the failure of NVS-02, IRNSS-1E will countinue to remain at its slot.[9]
IRNSS-1E will help augmenting the satellite based navigation system of India which is currently under development. The navigational system so developed will be regional, targeted towards South Asia. The satellite will provide navigation, tracking and mapping services.[10]
The satellite will have two payloads: a navigation payload and CDMA ranging payload in addition with a laser retro-reflector. The payload generates navigation signals at L5 and S-band. The design of the payload makes the IRNSS system interoperable and compatible withGlobal Positioning System (GPS) andGalileo.[5] The satellite is powered by two solar arrays, which generate power up to 1,660 watts, and has a designed life-time of twelve years.[6]
ThePolar Satellite Launch Vehicle, in its 33rd flight (PSLV-C31), launched IRNSS-1E from the Second Launch Pad (SLP) ofSatish Dhawan Space Centre (SDSC), Sriharikota. As in the previous four launches of IRNSS satellites, PSLV-C31 will use ‘XL’ version of PSLV.[11]
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